Thor Forums

[Wiley1]

Originally Posted by jerber

I have a 2016 Thor outlaw with a 4000 jenny and on the last trip coming home none of the appliances work off the jenny.when we got home and plugged into shore power all the appliances work.Is there some kind of transfer switch that I could reset or does anyone have an idea what to look for?Thanks Jerry

Yes, somewhere you have an ATS (automatic transfer switch). To find it, follow the shore power cable from where it enters the coach. The first place it goes should be the ATS.

The other cable entering the ATS will come from the Genset.
The output of your ATS will lead to your 120V breaker panel.

When you get inside the ATS, you should be able to read both inputs and the output with a multimeter. Check them under all three conditions: Genset with no shore power, shore power with no genset, and both connected at the same time. As we have been discussing in this thread, when both are running, it is typical for the generator to be given priority. While you're in there, tighten everything, before and after testing.

If you get in there and find no voltage on the generator input, that suggests the problem is in your genset.

If all connections are tight, there are no signs of arcing or sparking, and you have a good voltage on the gen input, you may need to replace the ATS. It might also be possible to change a component or two inside the ATS without purchasing a whole new box.